Tasca, D.S., Rudnicki, Ł., Aspden, R.S., Padgett, M.J. , Souto Ribeiro, P.H. and Walborn, S.P. (2018) Testing for entanglement with periodic coarse graining. Physical Review A: Atomic, Molecular and Optical Physics, 97(4), 042312. (doi: 10.1103/PhysRevA.97.042312)
|
Text
161705.pdf - Accepted Version 1MB |
Abstract
Continuous-variable systems find valuable applications in quantum information processing. To deal with an infinite-dimensional Hilbert space, one in general has to handle large numbers of discretized measurements in tasks such as entanglement detection. Here we employ the continuous transverse spatial variables of photon pairs to experimentally demonstrate entanglement criteria based on a periodic structure of coarse-grained measurements. The periodization of the measurements allows an efficient evaluation of entanglement using spatial masks acting as mode analyzers over the entire transverse field distribution of the photons and without the need to reconstruct the probability densities of the conjugate continuous variables. Our experimental results demonstrate the utility of the derived criteria with a success rate in entanglement detection of ∼60% relative to 7344 studied cases.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Aspden, Mr Reuben and Padgett, Professor Miles |
| Authors: | Tasca, D.S., Rudnicki, Ł., Aspden, R.S., Padgett, M.J., Souto Ribeiro, P.H., and Walborn, S.P. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Physical Review A: Atomic, Molecular and Optical Physics |
| Publisher: | American Physical Society |
| ISSN: | 2469-9926 |
| ISSN (Online): | 2469-9934 |
| Published Online: | 09 April 2018 |
| Copyright Holders: | Copyright © 2018 The American Physical Society |
| First Published: | First published in Physical Review A 97(4):042312 |
| Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
| Related URLs: |
University Staff: Request a correction | Enlighten Editors: Update this record
Funder and Project Information
Funder and Project Information